tamerlan taught everything to himself. we were happy about it because he didn't start doing drugs or alcohol. now he doesn't speak to other women he is not related to. they're not important to him because it's a sin to even look them in the eye. she saw him for four of the six months he was here, and he went to chechnya twice. >> translator: yes, he went to chechnya for a couple of days. i don't know where his relative there's lived. they were from his father's side. i do know that village was bombed in the second war, though. >> reporter: as pictures of boston played out around the world, she reveals that the mother rang the boys to check if they were well. but later that week they rang her again, allegedly when they were on the run, just the day before tamerlan died. the day before, she said they spoke, and it was like always, mommy, everything is fine with us. mommy, we're totally fine. mommy, that's what they call her. >> translator: we miss your warmth and caress, they said. tamerlan said "mommy, i love you clothe. an